Can you somehow force mc.avg~ to output individual values for each channel?

I cannot be alone in wanting to determine the average level of each channel in a multichannel signal. That's pretty standard signal processing stuff. But I cannot for the life of me get more than one number out of mc.avg~. I don't need to know the mean level for all the channels, so is there some trick to getting it to output a list with one value for each channel? It would be immensely useful.